Smoke consuming furnace.



ing inthe forward end thereof, radially adjustable supporting devices for mounting said motor casing, a rotary steam motor in said casing, means to direct the exhaust steam from said motor into the conveyor, a fan secured to the motor shaft and adapted to drive air inward around the motor casing and into the conveyer.

4. In a fan blower a conveyer, a motor casing in the forward end thereof, means for centering said motor casing in the conveyer,

fmeans for directing the exhaust steam ff'om said motor through the exhaust head in the motor casing, a converging delivering funnel "dially adjustable devices for centering said motor frame, a motor shaft, adjustable centering points for the ends of said shaft, a rotary steam motor wheel within the motor casing and secured to said shaft, means for directing the exhaust from said motor casing through the inner exhaust head thereof, an inwardly tapering funnel to receive said exhaust and direct it to the center of the conveyer, a fan on the outer end of the motor shaft and larger in diameter than the motor casing and arran ed to draw air inward around the motor .'rame.

6. In a fan blower a tubular conveyer, a

rotary steam motor mounted in the forward end thereof, a fan operated by said motor and adapted to draw air inward around the motor frame, a perforated steam rin arranged in the conveyer and adapted to irect steam inward on inclined lines, and means for simultaneously deliverihg steam to the motor and to the ring. 3 l v In testimolny whereof I hereunto afhx my signature ing" the presence of two witnesses this 30th da' of November 1906.

GE E. R. ROTHENBUCHER.

Witnesses:

WM. R. DAVIS, E; H. H. KAUFMANN.

PATENTED DEC. 3, 1907.

G. E. R. ROTHENBUGHER. SMOKE OONSUMING FURNACE.

APPLICATION FILED MAR. 12, 1907.

b @7 X w x Ml Z/Va .v

m/ ///////////%o7/w w. w w T. K

4220 VA yaw/4P4 glw-i/zllaoaco 7/27 um; d W

in whichi Figure 1 1s a horizontal sectional view of a UNITED STATES PATENT OFFICE. I

GEORGE E. R. ROTHENBUCHER, OF NEW YORK, N. Y.

SMOKE-CONSUMING FURNACE.

To all whom it may concern:

Be it known that. I, GEORGE E. R. ROTH- ENBUCHER, a citizen of the United States, residing in the borough of Brooklyn, county of Kings, city and State of New York, have in vented certain new and useful Improvements in Smoke-Consuming Furnaces, of which the following is a a specification, reference being had therein-to the accompanying drawings,

furnace provided with my invention; and Fig. 2 a transverse vertical sectional view thereof.

The main object of the invention is to provide an improved furnace in which cheap fuel, such as shavings and refuse from saw mills, soft'coal, 620., will be entirely consumedhwithin the fire box, or combustion chamber,- thereby preventing the escape of carbon particles in the form of smoke.

Another object of the invention is to provide means whereby exhaust steam and air may be delivered under a suitable pressure, an in the proper direction, over the fire in the fire box and upward through the bridge -wall to promote complete combustion.

A further object of the invention is to provide means whereby a part of the smoke will be withdrawn from the fire box near the forward end thereof into side fines and there mixed with air, or air and steam, and then passed into the fire box near the rear end thereof and through the bridge wall.

Other objects of the invention, relating more particularly to details of construction, will be fully hereinafter described and particularly pointed out inthe claims.

Referring tothe various parts by numerals, 1 designates the boiler front, 2 the fire box and 3 the bridge wall. In the side walls of the furnace, a suitable distance above the rate 4, are steam and air fines 5, one of said lues being in. each wall and extending the full length of the fire box, parallel with the side walls thereof. Each of these fines is formed of three interlocked cast iron tubular sections or boxes 6, 6 and 6 which open into each other and whose inner surfaces are flush with the inner surface of the side wall of the furnace. On the inner faces of these tubular sections 6, 6 are formed heating and deflector Walls 7 which incline inward and rearward at an angle of forty-five degrees with respect to the side wall of the furnace. Each section 6 is formed-with slits or open- Specification of Letters Patent.

Application filed March 12, 1907- Serial No. 362,048:

Patented Dec. 3, 1907.

ings 8 which extend inward through the Wall of'the section from the inner end of the deflector wall 7 andat the same an le as said deflector wall. The result of thisis that thin vertical streams of mixed steam and air flow outward through said slits over the deflector walls and into the fire box. The deflector walls form the forward sides of angular projections on the, face of the sections 6, said projections being V-shaped in plan view. As these projections extend into the fire box it will be readily seen that they become highly heated and that the deflector Walls ve as heating surfaces for the mixed steam and air.

The sections 6' are formed with slits or openings 8 which extend horizontally outwardly and rearwardly on an angle of about forty-five degrees with respect to the inner face of said sections 6. Within the sections 6 these slits or openings 8 are continued through nozzle-like projections 8 which extend a suitable distance within the section 6 and incline rearwardly as shown in Fig. 1. The purpose of this will clearly appear hereinafter.

The bridge wall 3 is formed at its upper edge with a cellular structure having hori zontal passages 9, said passages being formed by suitable brick work. In the bridge wall along the base of these passages is arranged a transverse flue or pipe 10 which connects at its ends with the rear ends of the side fiues 5. The flue 10 is very much smaller in capacity than the flues 5 and is connected to these latter flues near the bottoms thereof. The object of this is to hold the larger proportion of steam and air in the flue 5 and to permit only a small portion thereof to pass into the flue 10. This latter flue or pipe is perforated, said perforations opening into the passages 9 so that the steam and air will be directed into said passages to there mingle with the flame and products of combustion from the-fire box. pipe 10 will become highly heated and will thereby act as a superheater to the mixed air and steam, and that said mixture will pass into the passages 9 in a very dry condition use the means shown in my co-pending appli- It will be readily understood that the Any suitable means 

